One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(6,8)(9,10,12,14)(11,13,15,16)(17,18)(19,27)(20,32)(21,23)(22,36)(24,31)(25,34)(26,28)(29,45)(30,41)(33,42)(35,40)(37,43)(38,48)(39,46)(44,47)(1,2,4,5)(3,6,7,8)(9,11)(10,13)(12,15)(14,16)(18,23)(24,37)(25,32)(26,36)(27,41)(38,39)(40,47)(42,45)(1,3)(2,6)(4,7)(5,8)(11,15)(13,16)(17,19,28,43,21,30,22,31)(18,24,36,41,23,37,26,27)(20,33,44,46,34,29,35,48)(25,39,47,42,32,38,40,45)(3,7)(6,8)(17,20,22,35,21,34,28,44)(18,25,26,40,23,32,36,47)(19,29,31,46,30,33,43,48)(24,38,27,42,37,39,41,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.